backstage release v3.38.3

Fixed

• (agent-platform) Keep usage bars off red, raise side-panel text, tell same-named models apart by @QuentinBisson — On the Usage pages, latency bars are grey and average-token bars green, so red means errors only. The expanded sessions panel uses larger text, and Customize · Models shows the namespace of models that share a name.

Full Changelog: https://github.com/giantswarm/backstage/compare/v3.38.2...v3.38.3